<template>
  <view :id="attrs.id" :class="'_block _'+name+' '+attrs.class" :style="attrs.style">
    <block v-for="(n, i) in childs" v-bind:key="i">
      <!-- 图片 -->
      <!-- 占位图 -->
      <image v-if="n.name==='img'&&!n.t&&((opts[1]&&!ctrl[i])||ctrl[i]<0)" class="_img" :style="n.attrs.style" :src="ctrl[i]<0?opts[2]:opts[1]" mode="widthFix" />
      <!-- 显示图片 -->
      <!-- #ifdef H5 || (APP-PLUS && VUE2) -->
      <img v-if="n.name==='img'" :id="n.attrs.id" :class="'_img '+n.attrs.class" :style="(ctrl[i]===-1?'display:none;':'')+n.attrs.style" :src="n.attrs.src||(ctrl.load?n.attrs['data-src']:'')" :data-i="i" @load="imgLoad" @error="mediaError" @tap.stop="imgTap" @longpress="imgLongTap" />
      <!-- #endif -->
      <!-- #ifndef H5 || (APP-PLUS && VUE2) -->
      <!-- 表格中的图片，使用 rich-text 防止大小不正确 -->
      <rich-text v-if="n.name==='img'&&n.t" :style="'display:'+n.t" :nodes="[{attrs:{style:n.attrs.style||'',src:n.attrs.src},name:'img'}]" :data-i="i" @tap.stop="imgTap" />
      <!-- #endif -->
      <!-- #ifdef APP-HARMONY -->
      <image v-else-if="n.name==='img'" :id="n.attrs.id" :class="'_img '+n.attrs.class" :style="(ctrl[i]===-1?'display:none;':'')+'width:'+ctrl[i]+'px;'+n.attrs.style" :src="n.attrs.src||(ctrl.load?n.attrs['data-src']:'')" :mode="!n.h?'widthFix':(!n.w?'heightFix':(n.m||'scaleToFill'))" :data-i="i" @load="imgLoad" @error="mediaError" @tap.stop="imgTap" @longpress="imgLongTap" />
      <!-- #endif -->
      <!-- #ifndef H5 || APP-PLUS || MP-KUAISHOU -->
      <image v-else-if="n.name==='img'" :id="n.attrs.id" :class="'_img '+n.attrs.class" :style="(ctrl[i]===-1?'display:none;':'')+'width:'+(ctrl[i]||1)+'px;height:1px;'+n.attrs.style" :src="n.attrs.src" :mode="!n.h?'widthFix':(!n.w?'heightFix':(n.m||'scaleToFill'))" :lazy-load="opts[0]" :webp="n.webp" :show-menu-by-longpress="opts[3]&&!n.attrs.ignore" :image-menu-prevent="!opts[3]||n.attrs.ignore" :data-i="i" @load="imgLoad" @error="mediaError" @tap.stop="imgTap" @longpress="imgLongTap" />
      <!-- #endif -->
      <!-- #ifdef MP-KUAISHOU -->
      <image v-else-if="n.name==='img'" :id="n.attrs.id" :class="'_img '+n.attrs.class" :style="(ctrl[i]===-1?'display:none;':'')+n.attrs.style" :src="n.attrs.src" :lazy-load="opts[0]" :data-i="i" @load="imgLoad" @error="mediaError" @tap.stop="imgTap"></image>
      <!-- #endif -->
      <!-- #ifdef APP-PLUS && VUE3 -->
      <image v-else-if="n.name==='img'" :id="n.attrs.id" :class="'_img '+n.attrs.class" :style="(ctrl[i]===-1?'display:none;':'')+'width:'+(ctrl[i]||1)+'px;'+n.attrs.style" :src="n.attrs.src||(ctrl.load?n.attrs['data-src']:'')" :mode="!n.h?'widthFix':(!n.w?'heightFix':(n.m||''))" :data-i="i" @load="imgLoad" @error="mediaError" @tap.stop="imgTap" @longpress="imgLongTap" />
      <!-- #endif -->
      <!-- 文本 -->
      <!-- #ifdef MP-WEIXIN -->
      <text v-else-if="n.text" :user-select="opts[4]=='force'&&isiOS" decode>{{n.text}}</text>
      <!-- #endif -->
      <!-- #ifndef MP-WEIXIN || MP-BAIDU || MP-ALIPAY || MP-TOUTIAO -->
      <text v-else-if="n.text" decode>{{n.text}}</text>
      <!-- #endif -->
      <text v-else-if="n.name==='br'">\n</text>
      <!-- 链接 -->
      <view v-else-if="n.name==='a'" :id="n.attrs.id" :class="(n.attrs.href?'_a ':'')+n.attrs.class" hover-class="_hover" :style="'display:inline;'+n.attrs.style" :data-i="i" @tap.stop="linkTap">
        <node name="span" :childs="n.children" :opts="opts" style="display:inherit" />
      </view>
      <!-- 视频 -->
      <!-- #ifdef APP-PLUS -->
      <view v-else-if="n.html" :id="n.attrs.id" :class="'_video '+n.attrs.class" :style="n.attrs.style" v-html="n.html" :data-i="i" @vplay.stop="play" />
      <!-- #endif -->
      <!-- #ifndef APP-PLUS -->
      <video v-else-if="n.name==='video'" :id="n.attrs.id" :class="n.attrs.class" :style="n.attrs.style" :autoplay="n.attrs.autoplay" :controls="n.attrs.controls" :loop="n.attrs.loop" :muted="n.attrs.muted" :object-fit="n.attrs['object-fit']" :poster="n.attrs.poster" :src="n.src[ctrl[i]||0]" :data-i="i" @play="play" @error="mediaError" />
      <!-- #endif -->
      <!-- #ifdef H5 || APP-PLUS -->
      <iframe v-else-if="n.name==='iframe'" :style="n.attrs.style" :allowfullscreen="n.attrs.allowfullscreen" :frameborder="n.attrs.frameborder" :src="n.attrs.src" />
      <embed v-else-if="n.name==='embed'" :style="n.attrs.style" :src="n.attrs.src" />
      <!-- #endif -->
      <!-- #ifndef MP-TOUTIAO || ((H5 || APP-PLUS) && VUE3) -->
      <!-- 音频 -->
      <audio v-else-if="n.name==='audio'" :id="n.attrs.id" :class="n.attrs.class" :style="n.attrs.style" :author="n.attrs.author" :controls="n.attrs.controls" :loop="n.attrs.loop" :name="n.attrs.name" :poster="n.attrs.poster" :src="n.src[ctrl[i]||0]" :data-i="i" @play="play" @error="mediaError" />
      <!-- #endif -->
      <view v-else-if="(n.name==='table'&&n.c)||n.name==='li'" :id="n.attrs.id" :class="'_'+n.name+' '+n.attrs.class" :style="n.attrs.style">
        <node v-if="n.name==='li'" :childs="n.children" :opts="opts" />
        <view v-else v-for="(tbody, x) in n.children" v-bind:key="x" :class="'_'+tbody.name+' '+tbody.attrs.class" :style="tbody.attrs.style">
          <node v-if="tbody.name==='td'||tbody.name==='th'" :childs="tbody.children" :opts="opts" />
          <block v-else v-for="(tr, y) in tbody.children" v-bind:key="y">
            <view v-if="tr.name==='td'||tr.name==='th'" :class="'_'+tr.name+' '+tr.attrs.class" :style="tr.attrs.style">
              <node :childs="tr.children" :opts="opts" />
            </view>
            <view v-else :class="'_'+tr.name+' '+tr.attrs.class" :style="tr.attrs.style">
              <view v-for="(td, z) in tr.children" v-bind:key="z" :class="'_'+td.name+' '+td.attrs.class" :style="td.attrs.style">
                <node :childs="td.children" :opts="opts" />
              </view>
            </view>
          </block>
        </view>
      </view>
      
      <!-- 富文本 -->
      <!-- #ifdef H5 || ((MP-WEIXIN || MP-QQ || APP-PLUS || MP-360) && VUE2) -->
      <rich-text v-else-if="!n.c&&(n.l||!handler.isInline(n.name, n.attrs.style))" :id="n.attrs.id" :style="n.f" :user-select="opts[4]" :nodes="[n]" @tap.stop='handleNodeClick(n)'/>
      <!-- #endif -->
      <!-- #ifndef H5 || ((MP-WEIXIN || MP-QQ || APP-PLUS || MP-360) && VUE2) -->
      <rich-text v-else-if="!n.c" :id="n.attrs.id" :style="'display:inline;'+n.f" :preview="false" :selectable="opts[4]" :user-select="opts[4]" :nodes="[n]" @tap.stop='handleNodeClick(n)'/>
      <!-- #endif -->
      <!-- 继续递归 -->
      <view v-else-if="n.c===2" :id="n.attrs.id" :class="'_block _'+n.name+' '+n.attrs.class" :style="n.f+';'+n.attrs.style">
        <node v-for="(n2, j) in n.children" v-bind:key="j" :style="n2.f" :name="n2.name" :attrs="n2.attrs" :childs="n2.children" :opts="opts" />
      </view>
      <node v-else :style="n.f" :name="n.name" :attrs="n.attrs" :childs="n.children" :opts="opts" />
    </block>
  </view>
</template>
<script module="handler" lang="wxs">
// 行内标签列表
var inlineTags = {
  abbr: true,
  b: true,
  big: true,
  code: true,
  del: true,
  em: true,
  i: true,
  ins: true,
  label: true,
  q: true,
  small: true,
  span: true,
  strong: true,
  sub: true,
  sup: true
}
/**
 * @description 判断是否为行内标签
 */
module.exports = {
  isInline: function (tagName, style) {
    return inlineTags[tagName] || (style || '').indexOf('display:inline') !== -1
  }
}
</script>
<script>

import node from './node'
export default {
  name: 'node',
  options: {
    // #ifdef MP-WEIXIN
    virtualHost: true,
    // #endif
    // #ifdef MP-TOUTIAO
    addGlobalClass: false
    // #endif
  },
  data () {
    return {
      ctrl: {},
      // #ifdef MP-WEIXIN
      isiOS: uni.getSystemInfoSync().system.includes('iOS')
      // #endif
    }
  },
  props: {
    name: String,
    attrs: {
      type: Object,
      default () {
        return {}
      }
    },
    childs: Array,
    opts: Array
  },
  components: {

    // #ifndef ((H5 || APP-PLUS) && VUE3) || APP-HARMONY
    node
    // #endif
  },
  mounted () {
    this.$nextTick(() => {
      for (this.root = this.$parent; this.root.$options.name !== 'mp-html'; this.root = this.root.$parent);
    })
    // #ifdef H5 || APP-PLUS
    if (this.opts[0]) {
      let i
      for (i = this.childs.length; i--;) {
        if (this.childs[i].name === 'img') break
      }
      if (i !== -1) {
        this.observer = uni.createIntersectionObserver(this).relativeToViewport({
          top: 500,
          bottom: 500
        })
        this.observer.observe('._img', res => {
          if (res.intersectionRatio) {
            this.$set(this.ctrl, 'load', 1)
            this.observer.disconnect()
          }
        })
      }
    }
    // #endif
  },
  beforeDestroy () {
    // #ifdef H5 || APP-PLUS
    if (this.observer) {
      this.observer.disconnect()
    }
    // #endif
  },
  methods:{
    	  	  handleNodeClick(e){
	  	  	if(e.attrs.class=='hl-pre'){
	  			uni.setClipboardData({
	  				data: e.attrs['data-content'],
	  				showToast:false,
	  				success: () => {
	  					uni.showToast({duration: 2000,
	  						title: '代码复制成功',
	  						duration: 1000
	  					});
	  				},
	  				fail: (err) => {
	  					console.log('err', err);
	  				}
	  			});
	  	  	}
	  	  },
    // #ifdef MP-WEIXIN
    toJSON () { return this },
    // #endif
    /**
     * @description 播放视频事件
     * @param {Event} e
     */
    play (e) {
      const i = e.currentTarget.dataset.i
      const node = this.childs[i]
      this.root.$emit('play', {
        source: node.name,
        attrs: {
          ...node.attrs,
          src: node.src[this.ctrl[i] || 0]
        }
      })
      // #ifndef APP-PLUS
      if (this.root.pauseVideo) {
        let flag = false
        const id = e.target.id
        for (let i = this.root._videos.length; i--;) {
          if (this.root._videos[i].id === id) {
            flag = true
          } else {
            this.root._videos[i].pause() // 自动暂停其他视频
          }
        }
        // 将自己加入列表
        if (!flag) {
          const ctx = uni.createVideoContext(id
            // #ifndef MP-BAIDU
            , this
            // #endif
          )
          ctx.id = id
          if (this.root.playbackRate) {
            ctx.playbackRate(this.root.playbackRate)
          }
          this.root._videos.push(ctx)
        }
      }
      // #endif
    },

    /**
     * @description 图片点击事件
     * @param {Event} e
     */
    imgTap (e) {
      const node = this.childs[e.currentTarget.dataset.i]
      if (node.a) {
        this.linkTap(node.a)
        return
      }
      if (node.attrs.ignore) return
      // #ifdef H5 || APP-PLUS
      node.attrs.src = node.attrs.src || node.attrs['data-src']
      // #endif
      // #ifndef APP-HARMONY
      this.root.$emit('imgtap', node.attrs)
      // #endif
      // #ifdef APP-HARMONY
      this.root.$emit('imgtap', {
        ...node.attrs
      })
      // #endif
      // 自动预览图片
      if (this.root.previewImg) {
        uni.previewImage({
          // #ifdef MP-WEIXIN
          showmenu: this.root.showImgMenu,
          // #endif
          // #ifdef MP-ALIPAY
          enablesavephoto: this.root.showImgMenu,
          enableShowPhotoDownload: this.root.showImgMenu,
          // #endif
          current: parseInt(node.attrs.i),
          urls: this.root.imgList
        })
      }
    },

    /**
     * @description 图片长按
     */
    imgLongTap (e) {
      // #ifdef APP-PLUS
      const attrs = this.childs[e.currentTarget.dataset.i].attrs
      if (this.opts[3] && !attrs.ignore) {
        uni.showActionSheet({
          itemList: ['保存图片'],
          success: () => {
            const save = path => {
              uni.saveImageToPhotosAlbum({
                filePath: path,
                success () {
                  uni.showToast({duration: 2000,
                    title: '保存成功'
                  })
                }
              })
            }
            if (this.root.imgList[attrs.i].startsWith('http')) {
              uni.downloadFile({
                url: this.root.imgList[attrs.i],
                success: res => save(res.tempFilePath)
              })
            } else {
              save(this.root.imgList[attrs.i])
            }
          }
        })
      }
      // #endif
    },

    /**
     * @description 图片加载完成事件
     * @param {Event} e
     */
    imgLoad (e) {
      const i = e.currentTarget.dataset.i
      /* #ifndef H5 || (APP-PLUS && VUE2) */
      if (!this.childs[i].w) {
        // 设置原宽度
        this.$set(this.ctrl, i, e.detail.width)
      } else /* #endif */ if ((this.opts[1] && !this.ctrl[i]) || this.ctrl[i] === -1) {
        // 加载完毕，取消加载中占位图
        this.$set(this.ctrl, i, 1)
      }
      this.checkReady()
    },

    /**
     * @description 检查是否所有图片加载完毕
     */
    checkReady () {
      if (this.root && !this.root.lazyLoad) {
        this.root._unloadimgs -= 1
        if (!this.root._unloadimgs) {
          setTimeout(() => {
            this.root.getRect().then(rect => {
              this.root.$emit('ready', rect)
            }).catch(() => {
              this.root.$emit('ready', {})
            })
          }, 350)
        }
      }
    },

    /**
     * @description 链接点击事件
     * @param {Event} e
     */
    linkTap (e) {
      const node = e.currentTarget ? this.childs[e.currentTarget.dataset.i] : {}
      const attrs = node.attrs || e
      const href = attrs.href
      this.root.$emit('linktap', Object.assign({
        innerText: this.root.getText(node.children || []) // 链接内的文本内容
      }, attrs))
      if (href) {
        if (href[0] === '#') {
          // 跳转锚点
          this.root.navigateTo(href.substring(1)).catch(() => { })
        } else if (href.split('?')[0].includes('://')) {
          // 复制外部链接
          if (this.root.copyLink) {
            // #ifdef H5
            window.open(href)
            // #endif
            // #ifdef MP
            uni.setClipboardData({
              data: href,
              success: () =>
                uni.showToast({duration: 2000,
                  title: '链接已复制'
                })
            })
            // #endif
            // #ifdef APP-PLUS
            plus.runtime.openWeb(href)
            // #endif
          }
        } else {
          // 跳转页面
          uni.navigateTo({
            url: href,
            fail () {
              uni.switchTab({
                url: href,
                fail () { }
              })
            }
          })
        }
      }
    },

    /**
     * @description 错误事件
     * @param {Event} e
     */
    mediaError (e) {
      const i = e.currentTarget.dataset.i
      const node = this.childs[i]
      // 加载其他源
      if (node.name === 'video' || node.name === 'audio') {
        let index = (this.ctrl[i] || 0) + 1
        if (index > node.src.length) {
          index = 0
        }
        if (index < node.src.length) {
          this.$set(this.ctrl, i, index)
          return
        }
      } else if (node.name === 'img') {
        // #ifdef H5 && VUE3
        if (this.opts[0] && !this.ctrl.load) return
        // #endif
        // 显示错误占位图
        if (this.opts[2]) {
          this.$set(this.ctrl, i, -1)
        }
        this.checkReady()
      }
      if (this.root) {
        this.root.$emit('error', {
          source: node.name,
          attrs: node.attrs,
          // #ifndef H5 && VUE3
          errMsg: e.detail.errMsg
          // #endif
        })
      }
    }
  }
}
</script>
<style>/deep/ .hl-code,/deep/ .hl-pre{color:#ccc;background:0 0;font-family:Consolas,Monaco,'Andale Mono','Ubuntu Mono',monospace;font-size:1em;text-align:left;white-space:pre;word-spacing:normal;word-break:normal;word-wrap:normal;line-height:1.5;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-hyphens:none;-moz-hyphens:none;-ms-hyphens:none;hyphens:none}/deep/ .hl-pre{padding:1em;margin:.5em 0;overflow:auto}/deep/ .hl-pre{background:#2d2d2d}/deep/ .hl-block-comment,/deep/ .hl-cdata,/deep/ .hl-comment,/deep/ .hl-doctype,/deep/ .hl-prolog{color:#999}/deep/ .hl-punctuation{color:#ccc}/deep/ .hl-attr-name,/deep/ .hl-deleted,/deep/ .hl-namespace,/deep/ .hl-tag{color:#e2777a}/deep/ .hl-function-name{color:#6196cc}/deep/ .hl-boolean,/deep/ .hl-function,/deep/ .hl-number{color:#f08d49}/deep/ .hl-class-name,/deep/ .hl-constant,/deep/ .hl-property,/deep/ .hl-symbol{color:#f8c555}/deep/ .hl-atrule,/deep/ .hl-builtin,/deep/ .hl-important,/deep/ .hl-keyword,/deep/ .hl-selector{color:#cc99cd}/deep/ .hl-attr-value,/deep/ .hl-char,/deep/ .hl-regex,/deep/ .hl-string,/deep/ .hl-variable{color:#7ec699}/deep/ .hl-entity,/deep/ .hl-operator,/deep/ .hl-url{color:#67cdcc}/deep/ .hl-bold,/deep/ .hl-important{font-weight:700}/deep/ .hl-italic{font-style:italic}/deep/ .hl-entity{cursor:help}/deep/ .hl-inserted{color:green}@font-face{font-family:KaTeX_AMS;src:url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_AMS-Regular.woff2) format("woff2"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_AMS-Regular.woff) format("woff"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_AMS-Regular.ttf) format("truetype");font-weight:400;font-style:normal}@font-face{font-family:KaTeX_Caligraphic;src:url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Caligraphic-Bold.woff2) format("woff2"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Caligraphic-Bold.woff) format("woff"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Caligraphic-Bold.ttf) format("truetype");font-weight:700;font-style:normal}@font-face{font-family:KaTeX_Caligraphic;src:url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Caligraphic-Regular.woff2) format("woff2"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Caligraphic-Regular.woff) format("woff"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Caligraphic-Regular.ttf) format("truetype");font-weight:400;font-style:normal}@font-face{font-family:KaTeX_Fraktur;src:url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Fraktur-Bold.woff2) format("woff2"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Fraktur-Bold.woff) format("woff"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Fraktur-Bold.ttf) format("truetype");font-weight:700;font-style:normal}@font-face{font-family:KaTeX_Fraktur;src:url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Fraktur-Regular.woff2) format("woff2"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Fraktur-Regular.woff) format("woff"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Fraktur-Regular.ttf) format("truetype");font-weight:400;font-style:normal}@font-face{font-family:KaTeX_Main;src:url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Main-Bold.woff2) format("woff2"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Main-Bold.woff) format("woff"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Main-Bold.ttf) format("truetype");font-weight:700;font-style:normal}@font-face{font-family:KaTeX_Main;src:url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Main-BoldItalic.woff2) format("woff2"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Main-BoldItalic.woff) format("woff"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Main-BoldItalic.ttf) format("truetype");font-weight:700;font-style:italic}@font-face{font-family:KaTeX_Main;src:url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Main-Italic.woff2) format("woff2"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Main-Italic.woff) format("woff"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Main-Italic.ttf) format("truetype");font-weight:400;font-style:italic}@font-face{font-family:KaTeX_Main;src:url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Main-Regular.woff2) format("woff2"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Main-Regular.woff) format("woff"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Main-Regular.ttf) format("truetype");font-weight:400;font-style:normal}@font-face{font-family:KaTeX_Math;src:url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Math-BoldItalic.woff2) format("woff2"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Math-BoldItalic.woff) format("woff"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Math-BoldItalic.ttf) format("truetype");font-weight:700;font-style:italic}@font-face{font-family:KaTeX_Math;src:url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Math-Italic.woff2) format("woff2"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Math-Italic.woff) format("woff"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Math-Italic.ttf) format("truetype");font-weight:400;font-style:italic}@font-face{font-family:KaTeX_SansSerif;src:url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_SansSerif-Bold.woff2) format("woff2"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_SansSerif-Bold.woff) format("woff"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_SansSerif-Bold.ttf) format("truetype");font-weight:700;font-style:normal}@font-face{font-family:KaTeX_SansSerif;src:url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_SansSerif-Italic.woff2) format("woff2"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_SansSerif-Italic.woff) format("woff"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_SansSerif-Italic.ttf) format("truetype");font-weight:400;font-style:italic}@font-face{font-family:KaTeX_SansSerif;src:url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_SansSerif-Regular.woff2) format("woff2"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_SansSerif-Regular.woff) format("woff"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_SansSerif-Regular.ttf) format("truetype");font-weight:400;font-style:normal}@font-face{font-family:KaTeX_Script;src:url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Script-Regular.woff2) format("woff2"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Script-Regular.woff) format("woff"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Script-Regular.ttf) format("truetype");font-weight:400;font-style:normal}@font-face{font-family:KaTeX_Size1;src:url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Size1-Regular.woff2) format("woff2"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Size1-Regular.woff) format("woff"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Size1-Regular.ttf) format("truetype");font-weight:400;font-style:normal}@font-face{font-family:KaTeX_Size2;src:url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Size2-Regular.woff2) format("woff2"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Size2-Regular.woff) format("woff"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Size2-Regular.ttf) format("truetype");font-weight:400;font-style:normal}@font-face{font-family:KaTeX_Size3;src:url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Size3-Regular.woff2) format("woff2"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Size3-Regular.woff) format("woff"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Size3-Regular.ttf) format("truetype");font-weight:400;font-style:normal}@font-face{font-family:KaTeX_Size4;src:url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Size4-Regular.woff2) format("woff2"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Size4-Regular.woff) format("woff"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Size4-Regular.ttf) format("truetype");font-weight:400;font-style:normal}@font-face{font-family:KaTeX_Typewriter;src:url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Typewriter-Regular.woff2) format("woff2"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Typewriter-Regular.woff) format("woff"), url(https://lf26-cdn-tos.bytecdntp.com/cdn/expire-1-M/KaTeX/0.13.16/fonts/KaTeX_Typewriter-Regular.ttf) format("truetype");font-weight:400;font-style:normal}/deep/ .katex{counter-reset:katexEqnNo mmlEqnNo;font:normal 1.21em KaTeX_Main,Times New Roman,serif;line-height:1.2;text-indent:0;text-rendering:auto}/deep/ .katex text,/deep/ .katex view{-ms-high-contrast-adjust:none!important;border-color:currentColor}/deep/ .katex .katex-mathml{position:absolute;clip:rect(1px,1px,1px,1px);padding:0;border:0;height:1px;width:1px;overflow:hidden}/deep/ .katex .katex-html>.newline{display:block}/deep/ .katex .base{position:relative;display:inline-block;white-space:nowrap;width:min-content}/deep/ .katex .strut{display:inline-block}/deep/ .katex .textbf{font-weight:700}/deep/ .katex .textit{font-style:italic}/deep/ .katex .textrm{font-family:KaTeX_Main}/deep/ .katex .textsf{font-family:KaTeX_SansSerif}/deep/ .katex .texttt{font-family:KaTeX_Typewriter}/deep/ .katex .mathnormal{font-family:KaTeX_Math;font-style:italic}/deep/ .katex .mathit{font-family:KaTeX_Main;font-style:italic}/deep/ .katex .mathrm{font-style:normal}/deep/ .katex .mathbf{font-family:KaTeX_Main;font-weight:700}/deep/ .katex .boldsymbol{font-family:KaTeX_Math;font-weight:700;font-style:italic}/deep/ .katex .amsrm{font-family:KaTeX_AMS}/deep/ .katex .mathbb,/deep/ .katex .textbb{font-family:KaTeX_AMS}/deep/ .katex .mathcal{font-family:KaTeX_Caligraphic}/deep/ .katex .mathfrak,/deep/ .katex .textfrak{font-family:KaTeX_Fraktur}/deep/ .katex .mathtt{font-family:KaTeX_Typewriter}/deep/ .katex .mathscr,/deep/ .katex .textscr{font-family:KaTeX_Script}/deep/ .katex .mathsf,/deep/ .katex .textsf{font-family:KaTeX_SansSerif}/deep/ .katex .mathboldsf,/deep/ .katex .textboldsf{font-family:KaTeX_SansSerif;font-weight:700}/deep/ .katex .mathitsf,/deep/ .katex .textitsf{font-family:KaTeX_SansSerif;font-style:italic}/deep/ .katex .mainrm{font-family:KaTeX_Main;font-style:normal}/deep/ .katex .vlist-t{display:inline-table;table-layout:fixed;border-collapse:collapse}/deep/ .katex .vlist-r{display:table-row}/deep/ .katex .vlist{display:table-cell;vertical-align:bottom;position:relative}/deep/ .katex .vlist>.katex-span{display:block;height:0;position:relative}/deep/ .katex .vlist>.katex-span>.katex-span{display:inline-block}/deep/ .katex .vlist>.katex-span>.pstrut{overflow:hidden;width:0}/deep/ .katex .vlist-t2{margin-right:-2px}/deep/ .katex .vlist-s{display:table-cell;vertical-align:bottom;font-size:1px;width:2px;min-width:2px}/deep/ .katex .vbox{display:inline-flex;flex-direction:column;align-items:baseline}/deep/ .katex .hbox{display:inline-flex;flex-direction:row;width:100%}/deep/ .katex .thinbox{display:inline-flex;flex-direction:row;width:0;max-width:0}/deep/ .katex .msupsub{text-align:left}/deep/ .katex .mfrac>.katex-span>.katex-span{text-align:center}/deep/ .katex .mfrac .frac-line{display:inline-block;width:100%;border-bottom-style:solid}/deep/ .katex .hdashline,/deep/ .katex .hline,/deep/ .katex .mfrac .frac-line,/deep/ .katex .overline .overline-line,/deep/ .katex .rule,/deep/ .katex .underline .underline-line{min-height:1px}/deep/ .katex .mspace{display:inline-block}/deep/ .katex .clap,/deep/ .katex .llap,/deep/ .katex .rlap{width:0;position:relative}/deep/ .katex .clap>.inner,/deep/ .katex .llap>.inner,/deep/ .katex .rlap>.inner{position:absolute}/deep/ .katex .clap>.fix,/deep/ .katex .llap>.fix,/deep/ .katex .rlap>.fix{display:inline-block}/deep/ .katex .llap>.inner{right:0}/deep/ .katex .clap>.inner,/deep/ .katex .rlap>.inner{left:0}/deep/ .katex .clap>.inner>.katex-span{margin-left:-50%;margin-right:50%}/deep/ .katex .rule{display:inline-block;border:solid 0;position:relative}/deep/ .katex .hline,/deep/ .katex .overline .overline-line,/deep/ .katex .underline .underline-line{display:inline-block;width:100%;border-bottom-style:solid}/deep/ .katex .hdashline{display:inline-block;width:100%;border-bottom-style:dashed}/deep/ .katex .sqrt>.root{margin-left:.27777778em;margin-right:-.55555556em}/deep/ .katex .fontsize-ensurer.reset-size1.size1,/deep/ .katex .sizing.reset-size1.size1{font-size:1em}/deep/ .katex .fontsize-ensurer.reset-size1.size2,/deep/ .katex .sizing.reset-size1.size2{font-size:1.2em}/deep/ .katex .fontsize-ensurer.reset-size1.size3,/deep/ .katex .sizing.reset-size1.size3{font-size:1.4em}/deep/ .katex .fontsize-ensurer.reset-size1.size4,/deep/ .katex .sizing.reset-size1.size4{font-size:1.6em}/deep/ .katex .fontsize-ensurer.reset-size1.size5,/deep/ .katex .sizing.reset-size1.size5{font-size:1.8em}/deep/ .katex .fontsize-ensurer.reset-size1.size6,/deep/ .katex .sizing.reset-size1.size6{font-size:2em}/deep/ .katex .fontsize-ensurer.reset-size1.size7,/deep/ .katex .sizing.reset-size1.size7{font-size:2.4em}/deep/ .katex .fontsize-ensurer.reset-size1.size8,/deep/ .katex .sizing.reset-size1.size8{font-size:2.88em}/deep/ .katex .fontsize-ensurer.reset-size1.size9,/deep/ .katex .sizing.reset-size1.size9{font-size:3.456em}/deep/ .katex .fontsize-ensurer.reset-size1.size10,/deep/ .katex .sizing.reset-size1.size10{font-size:4.148em}/deep/ .katex .fontsize-ensurer.reset-size1.size11,/deep/ .katex .sizing.reset-size1.size11{font-size:4.976em}/deep/ .katex .fontsize-ensurer.reset-size2.size1,/deep/ .katex .sizing.reset-size2.size1{font-size:.83333333em}/deep/ .katex .fontsize-ensurer.reset-size2.size2,/deep/ .katex .sizing.reset-size2.size2{font-size:1em}/deep/ .katex .fontsize-ensurer.reset-size2.size3,/deep/ .katex .sizing.reset-size2.size3{font-size:1.16666667em}/deep/ .katex .fontsize-ensurer.reset-size2.size4,/deep/ .katex .sizing.reset-size2.size4{font-size:1.33333333em}/deep/ .katex .fontsize-ensurer.reset-size2.size5,/deep/ .katex .sizing.reset-size2.size5{font-size:1.5em}/deep/ .katex .fontsize-ensurer.reset-size2.size6,/deep/ .katex .sizing.reset-size2.size6{font-size:1.66666667em}/deep/ .katex .fontsize-ensurer.reset-size2.size7,/deep/ .katex .sizing.reset-size2.size7{font-size:2em}/deep/ .katex .fontsize-ensurer.reset-size2.size8,/deep/ .katex .sizing.reset-size2.size8{font-size:2.4em}/deep/ .katex .fontsize-ensurer.reset-size2.size9,/deep/ .katex .sizing.reset-size2.size9{font-size:2.88em}/deep/ .katex .fontsize-ensurer.reset-size2.size10,/deep/ .katex .sizing.reset-size2.size10{font-size:3.45666667em}/deep/ .katex .fontsize-ensurer.reset-size2.size11,/deep/ .katex .sizing.reset-size2.size11{font-size:4.14666667em}/deep/ .katex .fontsize-ensurer.reset-size3.size1,/deep/ .katex .sizing.reset-size3.size1{font-size:.71428571em}/deep/ .katex .fontsize-ensurer.reset-size3.size2,/deep/ .katex .sizing.reset-size3.size2{font-size:.85714286em}/deep/ .katex .fontsize-ensurer.reset-size3.size3,/deep/ .katex .sizing.reset-size3.size3{font-size:1em}/deep/ .katex .fontsize-ensurer.reset-size3.size4,/deep/ .katex .sizing.reset-size3.size4{font-size:1.14285714em}/deep/ .katex .fontsize-ensurer.reset-size3.size5,/deep/ .katex .sizing.reset-size3.size5{font-size:1.28571429em}/deep/ .katex .fontsize-ensurer.reset-size3.size6,/deep/ .katex .sizing.reset-size3.size6{font-size:1.42857143em}/deep/ .katex .fontsize-ensurer.reset-size3.size7,/deep/ .katex .sizing.reset-size3.size7{font-size:1.71428571em}/deep/ .katex .fontsize-ensurer.reset-size3.size8,/deep/ .katex .sizing.reset-size3.size8{font-size:2.05714286em}/deep/ .katex .fontsize-ensurer.reset-size3.size9,/deep/ .katex .sizing.reset-size3.size9{font-size:2.46857143em}/deep/ .katex .fontsize-ensurer.reset-size3.size10,/deep/ .katex .sizing.reset-size3.size10{font-size:2.96285714em}/deep/ .katex .fontsize-ensurer.reset-size3.size11,/deep/ .katex .sizing.reset-size3.size11{font-size:3.55428571em}/deep/ .katex .fontsize-ensurer.reset-size4.size1,/deep/ .katex .sizing.reset-size4.size1{font-size:.625em}/deep/ .katex .fontsize-ensurer.reset-size4.size2,/deep/ .katex .sizing.reset-size4.size2{font-size:.75em}/deep/ .katex .fontsize-ensurer.reset-size4.size3,/deep/ .katex .sizing.reset-size4.size3{font-size:.875em}/deep/ .katex .fontsize-ensurer.reset-size4.size4,/deep/ .katex .sizing.reset-size4.size4{font-size:1em}/deep/ .katex .fontsize-ensurer.reset-size4.size5,/deep/ .katex .sizing.reset-size4.size5{font-size:1.125em}/deep/ .katex .fontsize-ensurer.reset-size4.size6,/deep/ .katex .sizing.reset-size4.size6{font-size:1.25em}/deep/ .katex .fontsize-ensurer.reset-size4.size7,/deep/ .katex .sizing.reset-size4.size7{font-size:1.5em}/deep/ .katex .fontsize-ensurer.reset-size4.size8,/deep/ .katex .sizing.reset-size4.size8{font-size:1.8em}/deep/ .katex .fontsize-ensurer.reset-size4.size9,/deep/ .katex .sizing.reset-size4.size9{font-size:2.16em}/deep/ .katex .fontsize-ensurer.reset-size4.size10,/deep/ .katex .sizing.reset-size4.size10{font-size:2.5925em}/deep/ .katex .fontsize-ensurer.reset-size4.size11,/deep/ .katex .sizing.reset-size4.size11{font-size:3.11em}/deep/ .katex .fontsize-ensurer.reset-size5.size1,/deep/ .katex .sizing.reset-size5.size1{font-size:.55555556em}/deep/ .katex .fontsize-ensurer.reset-size5.size2,/deep/ .katex .sizing.reset-size5.size2{font-size:.66666667em}/deep/ .katex .fontsize-ensurer.reset-size5.size3,/deep/ .katex .sizing.reset-size5.size3{font-size:.77777778em}/deep/ .katex .fontsize-ensurer.reset-size5.size4,/deep/ .katex .sizing.reset-size5.size4{font-size:.88888889em}/deep/ .katex .fontsize-ensurer.reset-size5.size5,/deep/ .katex .sizing.reset-size5.size5{font-size:1em}/deep/ .katex .fontsize-ensurer.reset-size5.size6,/deep/ .katex .sizing.reset-size5.size6{font-size:1.11111111em}/deep/ .katex .fontsize-ensurer.reset-size5.size7,/deep/ .katex .sizing.reset-size5.size7{font-size:1.33333333em}/deep/ .katex .fontsize-ensurer.reset-size5.size8,/deep/ .katex .sizing.reset-size5.size8{font-size:1.6em}/deep/ .katex .fontsize-ensurer.reset-size5.size9,/deep/ .katex .sizing.reset-size5.size9{font-size:1.92em}/deep/ .katex .fontsize-ensurer.reset-size5.size10,/deep/ .katex .sizing.reset-size5.size10{font-size:2.30444444em}/deep/ .katex .fontsize-ensurer.reset-size5.size11,/deep/ .katex .sizing.reset-size5.size11{font-size:2.76444444em}/deep/ .katex .fontsize-ensurer.reset-size6.size1,/deep/ .katex .sizing.reset-size6.size1{font-size:.5em}/deep/ .katex .fontsize-ensurer.reset-size6.size2,/deep/ .katex .sizing.reset-size6.size2{font-size:.6em}/deep/ .katex .fontsize-ensurer.reset-size6.size3,/deep/ .katex .sizing.reset-size6.size3{font-size:.7em}/deep/ .katex .fontsize-ensurer.reset-size6.size4,/deep/ .katex .sizing.reset-size6.size4{font-size:.8em}/deep/ .katex .fontsize-ensurer.reset-size6.size5,/deep/ .katex .sizing.reset-size6.size5{font-size:.9em}/deep/ .katex .fontsize-ensurer.reset-size6.size6,/deep/ .katex .sizing.reset-size6.size6{font-size:1em}/deep/ .katex .fontsize-ensurer.reset-size6.size7,/deep/ .katex .sizing.reset-size6.size7{font-size:1.2em}/deep/ .katex .fontsize-ensurer.reset-size6.size8,/deep/ .katex .sizing.reset-size6.size8{font-size:1.44em}/deep/ .katex .fontsize-ensurer.reset-size6.size9,/deep/ .katex .sizing.reset-size6.size9{font-size:1.728em}/deep/ .katex .fontsize-ensurer.reset-size6.size10,/deep/ .katex .sizing.reset-size6.size10{font-size:2.074em}/deep/ .katex .fontsize-ensurer.reset-size6.size11,/deep/ .katex .sizing.reset-size6.size11{font-size:2.488em}/deep/ .katex .fontsize-ensurer.reset-size7.size1,/deep/ .katex .sizing.reset-size7.size1{font-size:.41666667em}/deep/ .katex .fontsize-ensurer.reset-size7.size2,/deep/ .katex .sizing.reset-size7.size2{font-size:.5em}/deep/ .katex .fontsize-ensurer.reset-size7.size3,/deep/ .katex .sizing.reset-size7.size3{font-size:.58333333em}/deep/ .katex .fontsize-ensurer.reset-size7.size4,/deep/ .katex .sizing.reset-size7.size4{font-size:.66666667em}/deep/ .katex .fontsize-ensurer.reset-size7.size5,/deep/ .katex .sizing.reset-size7.size5{font-size:.75em}/deep/ .katex .fontsize-ensurer.reset-size7.size6,/deep/ .katex .sizing.reset-size7.size6{font-size:.83333333em}/deep/ .katex .fontsize-ensurer.reset-size7.size7,/deep/ .katex .sizing.reset-size7.size7{font-size:1em}/deep/ .katex .fontsize-ensurer.reset-size7.size8,/deep/ .katex .sizing.reset-size7.size8{font-size:1.2em}/deep/ .katex .fontsize-ensurer.reset-size7.size9,/deep/ .katex .sizing.reset-size7.size9{font-size:1.44em}/deep/ .katex .fontsize-ensurer.reset-size7.size10,/deep/ .katex .sizing.reset-size7.size10{font-size:1.72833333em}/deep/ .katex .fontsize-ensurer.reset-size7.size11,/deep/ .katex .sizing.reset-size7.size11{font-size:2.07333333em}/deep/ .katex .fontsize-ensurer.reset-size8.size1,/deep/ .katex .sizing.reset-size8.size1{font-size:.34722222em}/deep/ .katex .fontsize-ensurer.reset-size8.size2,/deep/ .katex .sizing.reset-size8.size2{font-size:.41666667em}/deep/ .katex .fontsize-ensurer.reset-size8.size3,/deep/ .katex .sizing.reset-size8.size3{font-size:.48611111em}/deep/ .katex .fontsize-ensurer.reset-size8.size4,/deep/ .katex .sizing.reset-size8.size4{font-size:.55555556em}/deep/ .katex .fontsize-ensurer.reset-size8.size5,/deep/ .katex .sizing.reset-size8.size5{font-size:.625em}/deep/ .katex .fontsize-ensurer.reset-size8.size6,/deep/ .katex .sizing.reset-size8.size6{font-size:.69444444em}/deep/ .katex .fontsize-ensurer.reset-size8.size7,/deep/ .katex .sizing.reset-size8.size7{font-size:.83333333em}/deep/ .katex .fontsize-ensurer.reset-size8.size8,/deep/ .katex .sizing.reset-size8.size8{font-size:1em}/deep/ .katex .fontsize-ensurer.reset-size8.size9,/deep/ .katex .sizing.reset-size8.size9{font-size:1.2em}/deep/ .katex .fontsize-ensurer.reset-size8.size10,/deep/ .katex .sizing.reset-size8.size10{font-size:1.44027778em}/deep/ .katex .fontsize-ensurer.reset-size8.size11,/deep/ .katex .sizing.reset-size8.size11{font-size:1.72777778em}/deep/ .katex .fontsize-ensurer.reset-size9.size1,/deep/ .katex .sizing.reset-size9.size1{font-size:.28935185em}/deep/ .katex .fontsize-ensurer.reset-size9.size2,/deep/ .katex .sizing.reset-size9.size2{font-size:.34722222em}/deep/ .katex .fontsize-ensurer.reset-size9.size3,/deep/ .katex .sizing.reset-size9.size3{font-size:.40509259em}/deep/ .katex .fontsize-ensurer.reset-size9.size4,/deep/ .katex .sizing.reset-size9.size4{font-size:.46296296em}/deep/ .katex .fontsize-ensurer.reset-size9.size5,/deep/ .katex .sizing.reset-size9.size5{font-size:.52083333em}/deep/ .katex .fontsize-ensurer.reset-size9.size6,/deep/ .katex .sizing.reset-size9.size6{font-size:.5787037em}/deep/ .katex .fontsize-ensurer.reset-size9.size7,/deep/ .katex .sizing.reset-size9.size7{font-size:.69444444em}/deep/ .katex .fontsize-ensurer.reset-size9.size8,/deep/ .katex .sizing.reset-size9.size8{font-size:.83333333em}/deep/ .katex .fontsize-ensurer.reset-size9.size9,/deep/ .katex .sizing.reset-size9.size9{font-size:1em}/deep/ .katex .fontsize-ensurer.reset-size9.size10,/deep/ .katex .sizing.reset-size9.size10{font-size:1.20023148em}/deep/ .katex .fontsize-ensurer.reset-size9.size11,/deep/ .katex .sizing.reset-size9.size11{font-size:1.43981481em}/deep/ .katex .fontsize-ensurer.reset-size10.size1,/deep/ .katex .sizing.reset-size10.size1{font-size:.24108004em}/deep/ .katex .fontsize-ensurer.reset-size10.size2,/deep/ .katex .sizing.reset-size10.size2{font-size:.28929605em}/deep/ .katex .fontsize-ensurer.reset-size10.size3,/deep/ .katex .sizing.reset-size10.size3{font-size:.33751205em}/deep/ .katex .fontsize-ensurer.reset-size10.size4,/deep/ .katex .sizing.reset-size10.size4{font-size:.38572806em}/deep/ .katex .fontsize-ensurer.reset-size10.size5,/deep/ .katex .sizing.reset-size10.size5{font-size:.43394407em}/deep/ .katex .fontsize-ensurer.reset-size10.size6,/deep/ .katex .sizing.reset-size10.size6{font-size:.48216008em}/deep/ .katex .fontsize-ensurer.reset-size10.size7,/deep/ .katex .sizing.reset-size10.size7{font-size:.57859209em}/deep/ .katex .fontsize-ensurer.reset-size10.size8,/deep/ .katex .sizing.reset-size10.size8{font-size:.69431051em}/deep/ .katex .fontsize-ensurer.reset-size10.size9,/deep/ .katex .sizing.reset-size10.size9{font-size:.83317261em}/deep/ .katex .fontsize-ensurer.reset-size10.size10,/deep/ .katex .sizing.reset-size10.size10{font-size:1em}/deep/ .katex .fontsize-ensurer.reset-size10.size11,/deep/ .katex .sizing.reset-size10.size11{font-size:1.19961427em}/deep/ .katex .fontsize-ensurer.reset-size11.size1,/deep/ .katex .sizing.reset-size11.size1{font-size:.20096463em}/deep/ .katex .fontsize-ensurer.reset-size11.size2,/deep/ .katex .sizing.reset-size11.size2{font-size:.24115756em}/deep/ .katex .fontsize-ensurer.reset-size11.size3,/deep/ .katex .sizing.reset-size11.size3{font-size:.28135048em}/deep/ .katex .fontsize-ensurer.reset-size11.size4,/deep/ .katex .sizing.reset-size11.size4{font-size:.32154341em}/deep/ .katex .fontsize-ensurer.reset-size11.size5,/deep/ .katex .sizing.reset-size11.size5{font-size:.36173633em}/deep/ .katex .fontsize-ensurer.reset-size11.size6,/deep/ .katex .sizing.reset-size11.size6{font-size:.40192926em}/deep/ .katex .fontsize-ensurer.reset-size11.size7,/deep/ .katex .sizing.reset-size11.size7{font-size:.48231511em}/deep/ .katex .fontsize-ensurer.reset-size11.size8,/deep/ .katex .sizing.reset-size11.size8{font-size:.57877814em}/deep/ .katex .fontsize-ensurer.reset-size11.size9,/deep/ .katex .sizing.reset-size11.size9{font-size:.69453376em}/deep/ .katex .fontsize-ensurer.reset-size11.size10,/deep/ .katex .sizing.reset-size11.size10{font-size:.83360129em}/deep/ .katex .fontsize-ensurer.reset-size11.size11,/deep/ .katex .sizing.reset-size11.size11{font-size:1em}/deep/ .katex .delimsizing.size1{font-family:KaTeX_Size1}/deep/ .katex .delimsizing.size2{font-family:KaTeX_Size2}/deep/ .katex .delimsizing.size3{font-family:KaTeX_Size3}/deep/ .katex .delimsizing.size4{font-family:KaTeX_Size4}/deep/ .katex .delimsizing.mult .delim-size1>.katex-span{font-family:KaTeX_Size1}/deep/ .katex .delimsizing.mult .delim-size4>.katex-span{font-family:KaTeX_Size4}/deep/ .katex .nulldelimiter{display:inline-block;width:.12em}/deep/ .katex .delimcenter{position:relative}/deep/ .katex .op-symbol{position:relative}/deep/ .katex .op-symbol.small-op{font-family:KaTeX_Size1}/deep/ .katex .op-symbol.large-op{font-family:KaTeX_Size2}/deep/ .katex .op-limits>.vlist-t{text-align:center}/deep/ .katex .accent>.vlist-t{text-align:center}/deep/ .katex .accent .accent-body{position:relative}.katex .accent .accent-body:not(.accent-full){width:0}/deep/ .katex .overlay{display:block}/deep/ .katex .mtable .vertical-separator{display:inline-block;min-width:1px}/deep/ .katex .mtable .arraycolsep{display:inline-block}/deep/ .katex .mtable .col-align-c>.vlist-t{text-align:center}/deep/ .katex .mtable .col-align-l>.vlist-t{text-align:left}/deep/ .katex .mtable .col-align-r>.vlist-t{text-align:right}/deep/ .katex .svg-align{text-align:left}/deep/ .katex .katex-svg{display:block;position:absolute;width:100%;height:inherit;fill:currentColor;stroke:currentColor;fill-rule:nonzero;fill-opacity:1;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1}/deep/ .katex .katex-svg path{stroke:none}/deep/ .katex img{border-style:none;min-width:0;min-height:0;max-width:none;max-height:none}/deep/ .katex .stretchy{width:100%;display:block;position:relative;overflow:hidden}/deep/ .katex .stretchy::after,/deep/ .katex .stretchy::before{content:""}/deep/ .katex .hide-tail{width:100%;position:relative;overflow:hidden}/deep/ .katex .halfarrow-left{position:absolute;left:0;width:50.2%;overflow:hidden}/deep/ .katex .halfarrow-right{position:absolute;right:0;width:50.2%;overflow:hidden}/deep/ .katex .brace-left{position:absolute;left:0;width:25.1%;overflow:hidden}/deep/ .katex .brace-center{position:absolute;left:25%;width:50%;overflow:hidden}/deep/ .katex .brace-right{position:absolute;right:0;width:25.1%;overflow:hidden}/deep/ .katex .x-arrow-pad{padding:0 .5em}/deep/ .katex .cd-arrow-pad{padding:0 .55556em 0 .27778em}/deep/ .katex .mover,/deep/ .katex .munder,/deep/ .katex .x-arrow{text-align:center}/deep/ .katex .boxpad{padding:0 .3em}/deep/ .katex .fbox,/deep/ .katex .fcolorbox{box-sizing:border-box;border:.04em solid}/deep/ .katex .cancel-pad{padding:0 .2em}/deep/ .katex .cancel-lap{margin-left:-.2em;margin-right:-.2em}/deep/ .katex .sout{border-bottom-style:solid;border-bottom-width:.08em}/deep/ .katex .angl{box-sizing:border-box;border-top:.049em solid;border-right:.049em solid;margin-right:.03889em}/deep/ .katex .anglpad{padding:0 .03889em}/deep/ .katex .eqn-num::before{counter-increment:katexEqnNo;content:"(" counter(katexEqnNo) ")"}/deep/ .katex .mml-eqn-num::before{counter-increment:mmlEqnNo;content:"(" counter(mmlEqnNo) ")"}/deep/ .katex .mtr-glue{width:50%}/deep/ .katex .cd-vert-arrow{display:inline-block;position:relative}/deep/ .katex .cd-label-left{display:inline-block;position:absolute;right:calc(50% + .3em);text-align:left}/deep/ .katex .cd-label-right{display:inline-block;position:absolute;left:calc(50% + .3em);text-align:right}/deep/ .katex-display{display:block;margin:1em 0;text-align:center}/deep/ .katex-display>.katex{display:block;text-align:center;white-space:nowrap}/deep/ .katex-display>.katex>.katex-html{display:block;position:relative}/deep/ .katex-display>.katex>.katex-html>.tag{position:absolute;right:0}/deep/ .katex-display.leqno>.katex>.katex-html>.tag{left:0;right:auto}/deep/ .katex-display.fleqn>.katex{text-align:left;padding-left:2em}/deep/ .md-p {
  margin-block-start: 1em;
  margin-block-end: 1em;
}

/deep/ .md-table,
/deep/ .md-blockquote {
  margin-bottom: 16px;
}

/deep/ .md-table {
  box-sizing: border-box;
  width: 100%;
  overflow: auto;
  border-spacing: 0;
  border-collapse: collapse;
}

/deep/ .md-tr {
  background-color: #fff;
  border-top: 1px solid #c6cbd1;
}

.md-table .md-tr:nth-child(2n) {
  background-color: #f6f8fa;
}

/deep/ .md-th,
/deep/ .md-td {
  padding: 6px 13px !important;
  border: 1px solid #dfe2e5;
}

/deep/ .md-th {
  font-weight: 600;
}

/deep/ .md-blockquote {
  padding: 0 1em;
  color: #6a737d;
  border-left: 0.25em solid #dfe2e5;
}

/deep/ .md-code {
  padding: 0.2em 0.4em;
  font-family: SFMono-Regular, Consolas, Liberation Mono, Menlo, monospace;
  font-size: 85%;
  background-color: rgba(27, 31, 35, 0.05);
  border-radius: 3px;
}

/deep/ .md-pre .md-code {
  padding: 0;
  font-size: 100%;
  background: transparent;
  border: 0;
}
/* a 标签默认效果 */
._a {
  padding: 1.5px 0 1.5px 0;
  color: #366092;
  word-break: break-all;
}

/* a 标签点击态效果 */
._hover {
  text-decoration: underline;
  opacity: 0.7;
}

/* 图片默认效果 */
._img {
  max-width: 100%;
  -webkit-touch-callout: none;
}

/* 内部样式 */

._block {
  display: block;
}

._b,
._strong {
  font-weight: bold;
}

._code {
  font-family: monospace;
}

._del {
  text-decoration: line-through;
}

._em,
._i {
  font-style: italic;
}

._h1 {
  font-size: 2em;
}

._h2 {
  font-size: 1.5em;
}

._h3 {
  font-size: 1.17em;
}

._h5 {
  font-size: 0.83em;
}

._h6 {
  font-size: 0.67em;
}

._h1,
._h2,
._h3,
._h4,
._h5,
._h6 {
  display: block;
  font-weight: bold;
}

._image {
  height: 1px;
}

._ins {
  text-decoration: underline;
}

._li {
  display: list-item;
}

._ol {
  list-style-type: decimal;
}

._ol,
._ul {
  display: block;
  padding-left: 40px;
  margin: 1em 0;
}

._q::before {
  content: '"';
}

._q::after {
  content: '"';
}

._sub {
  font-size: smaller;
  vertical-align: sub;
}

._sup {
  font-size: smaller;
  vertical-align: super;
}

._thead,
._tbody,
._tfoot {
  display: table-row-group;
}

._tr {
  display: table-row;
}

._td,
._th {
  display: table-cell;
  vertical-align: middle;
}

._th {
  font-weight: bold;
  text-align: center;
}

._ul {
  list-style-type: disc;
}

._ul ._ul {
  margin: 0;
  list-style-type: circle;
}

._ul ._ul ._ul {
  list-style-type: square;
}

._abbr,
._b,
._code,
._del,
._em,
._i,
._ins,
._label,
._q,
._span,
._strong,
._sub,
._sup {
  display: inline;
}

/* #ifdef APP-PLUS */
._video {
  width: 300px;
  height: 225px;
}
/* #endif */
</style>